The generator matrix

 1  0  0  1  1  1  2  1  1  1  1  1  1  1  1
 0  1  0  0  1  3  1  4  1  4  2  5  7  2  1
 0  0  1  3  3  0  1  2  1  1  4  0  5  1  2
 0  0  0  4  0  0  0  0  4  4  0  4  4  0  4
 0  0  0  0  4  4  0  0  0  4  0  0  4  4  4

generates a code of length 15 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+309x^12+48x^13+576x^14+160x^15+642x^16+48x^17+224x^18+39x^20+1x^24

The gray image is a code over GF(2) with n=60, k=11 and d=24.
This code was found by Heurico 1.16 in 3.55 seconds.